Does anyone know if "encoder supp(v)" is the 5v reference voltage for the encoder position sensor. My Solus v.8.4 shows 3.39 +- .02v while a dvom backprobed at the control module reads a steady 5.01v. This is a '05 GMC YukonXL 5.3 with NVG246 t-case. The SO Te... Login to read more.